Seiichirou YOKOYA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Composition and light emitting device using the same
- Patent number 10,141,514
- Issue date Nov 27, 2018
- Sumitomo Chemical Company, Limited
- Toshiaki Sasada
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Composition and light emitting device using the same
- Patent number 9,929,359
- Issue date Mar 27, 2018
- Sumitomo Chemical Company, Limited
- Toshiaki Sasada
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
LIGHT-EMITTING DEVICE
- Publication number 20200203615
- Publication date Jun 25, 2020
- Sumitomo Chemical Company, Limited
- Toshiaki SASADA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT EMITTING DEVICE
- Publication number 20180375034
- Publication date Dec 27, 2018
- Sumitomo Chemical Company, Limited
- Toshiaki SASADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
LIGHT EMITTING DEVICE AND COMPOSITION USED IN THE SAME
- Publication number 20170117491
- Publication date Apr 27, 2017
- Sumitomo Chemical Company, Limited
- Toshiaki SASADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
COMPOSITION AND LIGHT EMITTING DEVICE USING THE SAME
- Publication number 20170040542
- Publication date Feb 9, 2017
- Sumitomo Chemical Company, Limited
- Toshiaki SASADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
COMPOSITION AND LIGHT EMITTING DEVICE USING THE SAME
- Publication number 20160164008
- Publication date Jun 9, 2016
- Sumitomo Chemical Company, Limited
- Toshiaki SASADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...